No image for the selected date
Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on August 27, 1999. Coordinates are given as of the end of the day.
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 8680 | N20 | W80 | 01 | 0000 | ALPHA | Aug 22, 1999 | Aug 29, 1999 | Sep 12, 1999 |
| № 8679 | S34 | E54 | 02 | 0050 | BETA | Sep 2, 1999 | Sep 9, 1999 | Sep 23, 1999 |
| № 8678 | N16 | W57 | 01 | 0010 | ALPHA | Aug 24, 1999 | Aug 31, 1999 | Sep 13, 1999 |
| № 8677 | N07 | E56 | 06 | 0080 | BETA | Sep 2, 1999 | Sep 8, 1999 | Sep 22, 1999 |
| № 8676 | N25 | E39 | 04 | 0020 | BETA | Aug 31, 1999 | Sep 7, 1999 | Sep 21, 1999 |
| № 8675 | N18 | E49 | 05 | 0060 | BETA | Sep 1, 1999 | Sep 8, 1999 | Sep 22, 1999 |
| № 8674 | S25 | W07 | 53 | 0440 | BETA-GAMMA | Aug 28, 1999 | Sep 4, 1999 | Sep 18, 1999 |
| № 8673 | S19 | W12 | 13 | 0410 | BETA | Aug 27, 1999 | Sep 3, 1999 | Sep 17, 1999 |
| № 8668 | N20 | W95 | 01 | 0060 | ALPHA | Aug 21, 1999 | Aug 28, 1999 | Sep 11, 1999 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1970 to August 1999. The gray background is the average SSN index.
